Electric circuit.



- No- 827,918. PATENTBD Am 1906.

I. KITSEE.

ELECTRIC CIRCUIT.

APPLICATION FILED APR. 1, 1904.

WITNESSES.-

INVENTOR.

i untrue s'rarias arner @FFIQE.

ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA.

ELEQTFHG QW ECUITF To a 'w/z-omj it 'hMY/Z/ concern Be it known that I, Isrnonv Iirrsnn, of the city and county of Plinladelphia, State oi Pennsylvania, have invented certain new and grammatic-view of two stations joined together by the circuit embodying my invention, and Fig. 2 is a modification of Fig. I, A designates one station, and A the second station. B designates the circuit as an entirety, consisting of the sectional conductors (,1, consisting of a non-magnetic material, such as copper, and D, consisting of a paramagnetic material, such as iron, respectively joined at the points E.

- To persons versed in the art it is well known that in the early days ofi telephony the circuit consisted of an iron wire; but it was found that the retardation was such to impede the speech if the transmission should be over a comparative long distance, and today an all-metallic line consisting entirely of copper conductors is substituted for the iron previously employed.

In my experiments I have found that whereas an iron conductor alone not well ada ted for the transmission of speech, a

con uctor consisting of altcrnatesections of -"iron and copper greatly increases the ethciency of long-distance telephone transmission, and as in an allmetall1c line bot; wires are running always parallel in close pr 'xnnity to each other I found it ex iedient to arrange the circuit in a manner so t at an iron section on one line should always be opposite to a cop per section-of the second line.

It is not necessary for me to go more into detail or to point out the exact ratio between the iron and copper to be employed for the sections; but I have found that the copper sections may with advantage be of double the lengthof the iron sections.

In Fi 1 of the drawings I have illustrated the sections of about equal length, and in Fig. 2 I have illustrated the copper to be about double the length of the iron sections; but it Specification of Letters Eatent.

Annlication filed Avril 1904 Serial No. 201.124.

Patented Aug. 7, 1906.

is obvious that these lengths may difier without departing from the scope of my 111 vention. I can state right here that tests pacit-ies, and that invariably the result of the sectional line, as I call it, wasmore 83.1515

of copper or iron alone.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is 1. In electricity, a line of transinissionconsisting of alternating sections of iron and copper conductors conductively conducted together each section running only part of the s ctions connected together so that each successive section shall overspan a successive part oi the length to be covered by said line of transmission.

2. In telephony, a line of transmission, said sections of copper wire and two or more sections of iron. wire, the sections of iron wire interveningbetween the sections of copper wire, sections of copper wire of greater length than the sections of iron wire.

copper conductor, iron sections'interposed at di tlerent points of said copper conductor, said iron sections of a shorter length than the copper conductor between which they are interposed.

4. In electric transmission, two stations, a line of transmission running from one station to the second station and connecting both stations together for the purpose of intercomniunication, said line of transmission consisting of a series of sections, each section overspa-nning part of the spacebetween the two stations, a number of said sections consisting of a copper conductor, and a number of said sections consisting of an iron conductor, the "sections of copper conductor intervening between the sections of iron conductor, all sections together forming the line of transmission.

5. In electricity, a single conductor overspanning the space between two stations and connecting said stations together, said single conductor consisting in parts of its length of copper and in parts of its length of iron, the parts of iron intervening between the parts of co mm and electrically connected thereto.

6. n combination, two telephonic stations,

were made over lines embodying line as well s artificial resistances, inductances, and ca-.'

factory than where the line consisted either" ei'itire'length of said line oftransmission, said 3. In a line of transmission consisting of a.

. line of transmission consistingof two or more u n e I u each PTOVldCCl with ti'al'ismitting 21ml receiv- 1mg devices, an electric circuit connectu Reid two stations ioget her for the purpose of int0r- F SlllCl circuit consist-mg ol' Q communication,

5 lengths of paramagnetic and lengths of nonygnagnetw eonductors each length ovez'spmining only part of the space between SELlCl two "stations, the lengths of the paramagneticconductor inuerppseil between the lengths of 1 0 hhenen nmgnetic conductor, all ofsavid lengths eennected tdgeivher so as to form one continubuscircuit.

An improved line of transmission eon: iist-ing of sections of paramagnetic material A5 interposed between sections of non-magnetic D1&116Ii8.-l,.6&0l1 section running only part of l l l l 

